It's fixed. Rightclick, break and replace and then just chase the error message arround for an hour :)
Thanks for the quick respons :) yeah I tried relogging and breaking replacing the same block - so last night I tried to build on a new and clean...
I'm trying to build a Turbine on AG+ - but no matter I do I get the message : Block is not valid for use on the machine's interior. the coords it...
Separate names with a comma.